Sign post



FIG. 1 is a perspective view of a sign post, incorporating the new design;

FIG. 2 is a front elevation view of the sign post of FIG. 1;

FIG. 3 is a side elevation view of the sign post of FIG. 1; and,

FIG. 4 is a top view of the sign post of FIG. 1.

The underside of the sign post is plain and unornamented. The broken lines are shown for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a sign post, as shown and described. 